private void AddUserToConnectionMap(UsernameVo username) { // Check if user is already existent in connection map if (requestorConnections.ContainsKey(username)) { requestorConnections.AddValueToSet(username, Context.ConnectionId); } else { requestorConnections.Add(username, Context.ConnectionId); } _logger.LogInformation($"Number of users in donatorConnections: {requestorConnections.Count()}"); }